Black May 
Subtitle: The Epic Story of the Allies' Defeat of the German U-Boats in May 1943
Publisher: Dell
Published: October 12, 1999
Language: eng
Number of pages: 576
ISBN-13: 9780440235644
First sentence: The U-515 was on her third operational patrol since the long-range Type IXC boat emerged from the yards of Deutsche Werft at Hamburg-Finkenwerder and Werner Henke raised the national flag and his Commander's pennant above her conning tower at the Indienst-stellung, or formal commissioning, on 21 February 1942.